Sealing structure for the openings of metal containers



Feb. 13, 1940. WACKMAN 2,190,495

SEALING STRUCTURE FOR THE OPENINGS 0F METAL CONTAINERS Filed Feb. 28, 1936 Patented Feb. 13,1940

SEALING. STRUCTURE FOR THE OPENINGS OF IHETAL CONTAINERS Louis B. WackmanfSt. Louis, Mo., assignor to i American Flange '& Manufacturing 00., Inc., New York, N. I; a corporation of Illinois Application February 28, 1936, Serial No. 66,203

8 Claims.

' T The principal object of the invention is to provide the bushing assembly of the sealing structure' with novel means forming a unitary part of the bushing assembly for sealing'cooperation with the structure.

Another object is in upsetting a part of the bushing assembly of the structure to provide a tab'for seal wire engaging cooperation with the structure. I I

.:A further object is to provide an extension bushing assembly in a container wall with an integrally formed sealing wire tab extending from the side thereof.

A still further object container with an extension bushing assembly having a' sealing wire tab extending from the side thereof, which may be pressedinwardly for sealing cap clinching engagement thereover.

" Otherobjects and advantages will appear as this description progresses and by reference to the drawing, in which: v

. Figure 1 is a fragmentary plan view .of a barrel head showing this improved structure applied thereto.

Flgure2 is'a side elevation taken in tion of the arrow II in Fig. 1.

Figure 3 is a vertical section taken approximately on the line III-III of Fig. 1.

. Figure 4 is a vertical section similar to Fig. 3 but showing the application of another form" of closure plug.

Figure 5 is a'fragmentary side elevation partly in section showing the application of a sealing cap to the structure.

Referring to the drawing, 5 designates a portion of a barrel head of a sheet metal container, the head having an outwardly pressed part forming a pocket 6, and concentrically extended from the material! of the pocket is an upstanding neck 'or flange 8. Mounted in the neck- 8 is a bushing 8 which is interiorly threaded as designated at H), said bushing having a flange I I with radially extending projections engaged in similarly formed recesses in the pocket 6 for preventing turning of the bushing in the neck or flange 8, when the bushing is secured in position.

For securingthe bushing 9 in the" neck 8 and the flange ll thereof in the pocket 6, a relatively thin wall I2 is extended from the'bushing above the upper end of the threads I0 and is curled over the free end of the neck at I3, the curling of the thin wall l2 tightly drawing the bushing in the neck so that the flange ll of the bushing will securely under-engage the gasket M which is in-' terposed between the flange II and the material I of the head and/or the pocket 6. 1

The manner in which the thin wall l2 extends from the upper end of the threads ill of the bushing, provides a seat l5 at the upper end of the threads for the gasket [6 which is carried is to provide a metal the direcin the groove ll of a closure plug l8, which is adapted to be mounted in the bushing in engagement with the threads l0 thereof.

The plug I 8 is provided with a flange IS in proximity to the gasketgroove ",and thediameter of the plug flange is approximately-that of the outside diameter of the plug. threads 20,

and the plug flange being of slightly less diame'ter than that of the inner peripheryof the thin wall l2 of the bushing 9. This form of construction of plug provides for the plug being mounted in the bushing in a counter-sunk manner, and in fact is a plug of the counter-sunk type.

The gasket groove ll of the plug I8 is rela-. tively deep so that the gasket I6 carried thereby can be plug held when the plug is removed from the bushing, and further, so that the gasket which has an outside diameter greater than the plug flange-l9, cannot be forced or pulled out -of the groove when the plug is being mounted in closing position in the bushing by frictional engagement of the outer periphery of the gasket with the thin wall l2 of the bushing.

A polygonal walled socket 2| is formed in the outer end of the plug [8 for wrench engagement gasket to be crowded upward into and between the plug flange periphery and the inner periph-- H cry of the bushing wall l2, in the manner as 1- shown at 22 in Fig. 3. This manner of compressing and seating the plug gasket l6 will provide a seal both onthe gasket seat l5 of the bushing and against the bushing wall I2, by reason of the plug flange l9 securingthe interposed annular The plug I8 on opposing sides of the polygonal socket 2| is provided with a wall 23, each having an aperture 24 formed therethrough. Either or both of these apertures may be used for engaging and passing a sealing wire therethrough for securing the plug in sealed condition.

For cooperation with the plug for wire sealing it in'closed position in the bushing, a plurality of tabs 25 are provided. These tabs of which there are a pair shown in diametrically opposite disposition, are eachstruck-out from the neck or flange 8 of the barrel head 5. and are each provided with an aperture 26.

. The tabs 25 are struck-out or formed in the neck 8 in positions intermediate the length of the neck and are preferably disposed a distance below the curled over part l3 of the wall l2 of the bushing 9, and after being formed, are outwardly bent toapproximately forty-five (45) degree positions, as shown more clearly in Fig. 1. I

Containers of the character to which this improved sealing structure is applicable, are generally used for storing and shipping oil, gasoline tabs and is then entrained through an aperture 2 of the plug 48, and is then engaged and passed through the aperture provided in thelseal element 28 which maybe of soft metal and is secured therein against unauthorized destruction and to detect unauthorized breakage of the seal, if suchshould occur.

Figure 4 shows the application and use of a cast iron plug '29 having an over-extending flange 3i} beneath which a gasket 31 is carried, and which is to be sealingly compressed on top of the annular bent over part l3 of the thin wall I2 of the bushing '9 when the plug is manipulated in the bushing in efiiciently tightened position. In this disclosure, apertures 32 are formed in the plug flange 38, and the seal wire 33 is passed through an aperture 26 of one of the tabs 25 and through one of the apertures 32 and is fastened in the seal element 34. In the event it is required to dispense with the application and use of sealing wires on certain shipments of the containers and it is desired to use sealing caps instead, for detecting unauthorized destruction and access to the closure structure, it is then necessary to fold back the tabs 25 into respective recesses 35 from which they were struck-out, .so that the skirt 36 of the sealing cap 3'! can be clinched in engagement against the neck or flange 8 beneath the curled or bent over par-t I13 of the bushing, as shown in Fig. 5.

Having thus described the invention so that those skilled in the art will be able to practice the same, what I desireto secure by Letters Patent is defined in what is claimed, it being'understood that various changes in the sealing structure shown and. described above in detail and not amounting to invention, may be made without departing from the spirit tion.

What I claim is: 1. In'structure of the character described, a

I container wall having an opening therein, a seat for a bushing surrounding said opening, a bush.- ing, including a flange, received in said seat and a portion of the stock of said seat being partially severed from the. adjacent stock and formed to provide an eyelet for reception of a sealing wire.

2. In structure of the character described, a container wall having an opening therein, a neck, formed from said container wall, surrounding said opening, a screw-threaded bushing secured in place in said neck, a tab portion struck, from said neck and apertured to receive a sealing wire, a screw-threaded plug secured in said bushing and sealing wire receiving means on said" plug cooperating with the means on said tab for reand scope of my invensealing wire receiving eyelet.

ception of a sealing wire to seal said plug against unauthorized removal. v Y

3. In structure of the character described, a

containerwall formed with an upstanding neck' around an opening th rein for the reception of closure parts, and sealing means forming partof saidneck, saidz'means comprising a tab-like, portion substantially severed from the remainder'of the neck, beingjoined thereto-merely at one end, ff; 10

the .stock adjacent the other "end ,ofthe tab bein apertured for-reception of a sealing wire. 4. In structure of'the character described, a

container wall having an opening therein surrounded by an upstanding neck, a bushing in said neck and a portion of said neck opposed to said 15 bushing being partially severed irorn' the remainder of said neck, said portion being bent out nee 5 of said neck and bushing and formed toprovidea sealing wire receiving eyelet.

5. In structure of the character-described,

container wall having an opening therein, a bushing, having a flange, in said opening and meansfor securing said bushing non-rotatably in place in said opening, said means including a securingv portion provided on said container wall and formed to extend in opposed relation to=="said portion being partially severed from the remain-.

' tier of the portion and bent outwardlytherefrom, said outwardly 'bent section being formed to prosaid neck and a portion of said neck opposed to said bushing being partially severed from there; mainder of said neck, said 'portion being bent out free of said neck and bushingand formed to pro- 7 vide a sealing wire receiving eyelet, the zone from which said portion'is projected being unobstructback in line with saidneck on the application thereto of asea'ling cap.

I bushing and its flange, a section of said: se'cur-ing" ed whereby said portion may be readily :forced '7. In structure of the ch-aracter descrihed, a

container wall having an opening therein, :abuslv ing, having a flange, in said opening and a'bushhag-securing formation carried by :said contaiiner wall and formed to extend in opposed relation said bushing and its fiange, interengaging means betwen said bushing and formation for securing said bushing in said opening and' sealing wire receiving means formed integrally with said 'for-i mation, said means comprising a portion of the stock of said formation projected from-the 'nor-' mal contour of the same and being provided with e a sealing wirereceiving eyelet. 8. In structure of the character described, a container wall having an opening therein, a bush ing, having a flange, in said opening "anda bush? ing-securing formation carried by said container wall and formed to extend in opposed relation to said bushing and its flange, interengaging means between said bushing and formation for securing said bushing in said opening and .sealingwire freceiving means stormed integrally with said formation, said means comprising a portion ofthelstoCk of said formation projected from the normal con,- tour of the same and being formed to 'previd-eja LOUIS B. WAG-mm. 

